Sony KLV-20S400A Service Manual ▷ View online
– 12 –
KLV-20S400A
RM-GA011/W
5-1. Accessing Diagnostic Menu
1.
While TV set on standby, press the following sequence on
the remote commander (RM-GA011/W).
the remote commander (RM-GA011/W).
2.
The following menu will appear on the screen:
3.
To reset, select ‘RESET’ using remote commander and
press
press
to execute RESET.
4.
To quit the diagnostic menu, turn off and on the TV set.
5-2. Aging
1.
While TV set on standby, press the following sequence on
the remote commander (RM-GA011/W).
the remote commander (RM-GA011/W).
2.
The following menu will appear on the screen.
On screen
display
Channel 5
Volume (-)
POWER
ERROR
DC_DET
DC_ALERT1
DC_ALERT2
DC_ALERT3
BACKLIGHT
INTERNAL TEMP ERROR
AUDIO ERROR
NVM ERROR
IIC ERROR
BALANCER ERROR
HDMI ERROR
0
0
0
0
0
0
0
0
0
0
0
RESET
0
3.
Press
V
/
v
to select ‘Service’.
4.
Press
B
/
b
or
to view ‘Service’ category items.
Press
V
/
v
to select ‘PATTERN’. Then press
B
/
b
then
V
/
v
to select ‘WHITE PATTERN’ and
.
5.
The aging Condition is as the following:
a) Supply voltage
a) Supply voltage
: Rating
b) Time
: 20 minutes or over
c) Ambient Temp
: 22~28 degrees
5-3. Resetting the User Menu - Factory Reset
Note: THE TEST RESET option resets all the customer
adjustable data back to factory defaults.
adjustable data back to factory defaults.
1.
While TV set on standby, press the following sequence on
the remote commander (RM-GA011/W).
the remote commander (RM-GA011/W).
2.
The following menu will appear on the screen:
SECTION 5
SERVICE ADJUSTMENTS
Figure 1
Figure 4
Figure 2
Figure 3
On screen
display
Channel 5
Volume (+)
POWER
Service Menu
Status
W/B
Service
Service Menu
TEST RESET
PATTERN
PRODUCTION
APC
OVER MODULATION
OPTIONS
AUTOSET FACTORY
SERIAL NUMBER EDIT
ETI1 CLEAR
No Signal Mute
Cancel
WHITE PATTERN
11111111
Normal
Off
DEFAULT
Off
Service
OPT 1
Cancel
Figure 5
Figure 6
Figure 7
Service Menu
Status
W/B
Service
Service Menu
Status
W/B
Service
On screen
display
Channel 5
Volume (-)
POWER
– 13 –
KLV-20S400A
RM-GA011/W
3.
Press
V
/
v
to select ‘Service’.
4.
Then press
B
/
b
or
to view ‘Service’ category items.
Next select ‘TEST RESET’ by pressing
V
/
v
.
5.
Finally press
B
/
b
or
then
V
/
v
to select ‘OK’ and confirm
selection by pressing
.
5-4. White Balance Adjustment
Note: The white balance need to be adjusted when BG1 board
and Panel is replaced.
and Panel is replaced.
1.
While TV set on standby, press the following sequence on
the remote commander (RM-GA011/W).
the remote commander (RM-GA011/W).
2.
The following menu will appear on the screen:
3.
Press
B
/
b
or
to view ‘W/B’.
4.
Then press
B
/
b
or
to view ‘W/B’ category items.
5.
Press
V
/
v
to select ‘INITIALIZE’. Then press
B
/
b
or
then
V
/
v
to select ‘INIT START’ and execute selection by
pressing
.
6.
W/B need to be adjusted for all LEVEL (0~4).
For Level 0
7.
Select 'LEVEL' using
V
/
v
and choose ‘0’.Then do
adjustment for R_Drive, G_Drive and B_Drive. To increase/
decrease data value, press
V
/
v
.
8.
Once adjustment has completed for R_Drive, G_Drive and
B_Drive, press
V
/
v
to select ‘COLOR SAVE’. Next press
B
/
b
then
V
/
v
to choose ‘OK’ and press
.
9.
Repeat step 7 and 8 for level 1~4.
10. Once W/B adjustment has been completed for all levels
(0~4), select ‘INITIALIZE’, choose ‘INT END’ and press
.
5-5. Board & Panel Replacement
When replacing the BG1 board and Panel, make sure to readjust
the W/B.
the W/B.
Figure 12
Service Menu
Service
TEST RESET
PATTERN
PRODUCTION
APC
OVER MODULATION
OPTIONS
AUTOSET FACTORY
SERIAL NUMBER EDIT
ETI1 CLEAR
No Signal Mute
Cancel
Off
11111111
Normal
Off
OPT1
DEFAULT
Off
Cancel
Figure 10
Service Menu
W/B
INITIALIZE
LEVEL
R_DRIVE
G_DRIVE
INIT START
0
0
0
B_DRIVE
0
Cancel
COLOR_SAVE
Service Menu
Status
W/B
Service
Figure 8
Figure 9
Figure 11
Service Menu
Status
W/B
Service
Service Menu
Status
W/B
Service
Figure 13
On screen
display
Channel 5
Volume (-)
POWER
– 14 –
KLV-20S400A
RM-GA011/W
6-2. CIRCUIT BOARD LOCATION
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM
Due to complexity of the board, performing
component level field repairs are not recommended.
Complete board replacement is required if service is
necessary.
component level field repairs are not recommended.
Complete board replacement is required if service is
necessary.
H1S Board
BG1 Board
GD Board
H3S Board
Inverter Board
– 15 –
KLV-20S400A
RM-GA011/W
6-3. SCHEMATIC DIAGRAM
6-4. PRINTED WIRING BOARDS
Board
Function
Note
BG1
I/O/Audio/VCTP/DDR/HDMI/
Due to complexity of the board, performing
DC-DC Converter/Tuner/Sub
component level field repairs are not
Croma/STBY Micro
recommended. Complete board
replacement is required if service is
replacement is required if service is
GD
Power Supply
necessary.
Therefore schematic diagrams and
Therefore schematic diagrams and
H1S
Key
printed wiring boards are not included.
For part number information, refer to
Exploded View or Electrical Parts List
For part number information, refer to
Exploded View or Electrical Parts List
H3S
LED/SIRCS/Optical Sensor
section in this manual.
INVERTER
INVERTER BOARD
BOARD
6-5. SEMICONDUCTOR
Due to complexity of the board, performing
component level field repairs are not recommended.
Complete board replacement is required if service is
necessary.
component level field repairs are not recommended.
Complete board replacement is required if service is
necessary.
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